6270 lcd no light - GSM-Forum

patrik.b · 10-04-2008, 22:09

I have a 6270 damaged by water.
I remove oxide, and after that the phone works fine but there isn't light on display. Keypad light works fine.The display is ok.

I see schematic but there is only the main board. I need upper side scheme.
Thanks in advance.
Best regards

janar_jk · 10-04-2008, 22:23

Did u try changing flex and checked both flex connectors?Problem might be caused by UI PWB (upper PWB) try changing this.

BR Janar

patrik.b · 10-04-2008, 22:24

white led on upper side works fine...

I think that water damaged a wire, so I need upper side scheme

nsns285 · 10-04-2008, 22:25

search and you have the solution.......

patrik.b · 10-04-2008, 22:26

before to open this thread I have used search button with key: 6270 lcd light , but I don't have found solution...

Byte · 10-05-2008, 05:08

u may check lcd, UI board, flex cable, connector, led driver ( behind tahvoo )

----
Byte

patrik.b · 10-05-2008, 10:27

thanks for reply, I am sure that:
-lcd works fine;
-flex cable works fine;
-main board works fine;

lcd board was damaged by water so a wire was interrupted and into schematic there isn't scheme about lcd board...
I don't know the pin with lcd backlight into lcd connector.
Thanks in advance
B.R.

patrik.b · 10-05-2008, 13:49

into lcd board I have 18V, but probably there is a wire broken...
I am looking for lcd connector pinout
Thanks in advance
B.R.

Byte · 10-05-2008, 19:36

Quote:

Originally Posted by patrik.b

into lcd board I have 18V, but probably there is a wire broken...
I am looking for lcd connector pinout
Thanks in advance
B.R.

check the 18v path from working UI board!

----
Byte

patrik.b · 10-05-2008, 20:15

...I don't have a working lcd board...

patrik.b · 10-06-2008, 23:23

With the picture posted by vinay_sharma i fix my problem.
Here the solution:

http://forum.gsmhosting.com/vbb/show...&postcount=479

Many thanks to vinay_sharma

babak fatolahi · 12-27-2008, 14:51

patrik .b
i have same prob can you explaine that pic (vinary_sharma)
the up kepad ligth work but LCD light is not work ?

10-04-2008, 22:09	#1 (permalink)
patrik.b Freak Poster Join Date: Jun 2005 Posts: 314 Member: 153675 Status: Offline Thanks Meter: 20	6270 lcd no light I have a 6270 damaged by water. I remove oxide, and after that the phone works fine but there isn't light on display. Keypad light works fine.The display is ok. I see schematic but there is only the main board. I need upper side scheme. Thanks in advance. Best regards

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10-04-2008, 22:23	#2 (permalink)
janar_jk No Life Poster Join Date: Jun 2005 Location: Estonia Age: 37 Posts: 1,034 Member: 154612 Status: Offline Thanks Meter: 824	Did u try changing flex and checked both flex connectors?Problem might be caused by UI PWB (upper PWB) try changing this. BR Janar

10-04-2008, 22:24	#3 (permalink)
patrik.b Freak Poster Join Date: Jun 2005 Posts: 314 Member: 153675 Status: Offline Thanks Meter: 20	white led on upper side works fine... I think that water damaged a wire, so I need upper side scheme

10-04-2008, 22:25	#4 (permalink)
nsns285 Freak Poster Join Date: Sep 2004 Location: LEBANON Age: 41 Posts: 427 Member: 80869 Status: Offline Sonork: 100.1638021 Thanks Meter: 94	search and you have the solution.......

10-04-2008, 22:26	#5 (permalink)
patrik.b Freak Poster Join Date: Jun 2005 Posts: 314 Member: 153675 Status: Offline Thanks Meter: 20	before to open this thread I have used search button with key: 6270 lcd light , but I don't have found solution...

10-05-2008, 05:08	#6 (permalink)
Byte Registered User Join Date: Sep 2003 Location: Palestine Age: 50 Posts: 1,951 Member: 39208 Status: Offline Thanks Meter: 152	u may check lcd, UI board, flex cable, connector, led driver ( behind tahvoo ) ---- Byte

10-05-2008, 10:27	#7 (permalink)
patrik.b Freak Poster Join Date: Jun 2005 Posts: 314 Member: 153675 Status: Offline Thanks Meter: 20	thanks for reply, I am sure that: -lcd works fine; -flex cable works fine; -main board works fine; lcd board was damaged by water so a wire was interrupted and into schematic there isn't scheme about lcd board... I don't know the pin with lcd backlight into lcd connector. Thanks in advance B.R.

10-05-2008, 13:49	#8 (permalink)
patrik.b Freak Poster Join Date: Jun 2005 Posts: 314 Member: 153675 Status: Offline Thanks Meter: 20	into lcd board I have 18V, but probably there is a wire broken... I am looking for lcd connector pinout Thanks in advance B.R.

10-05-2008, 20:15	#10 (permalink)
patrik.b Freak Poster Join Date: Jun 2005 Posts: 314 Member: 153675 Status: Offline Thanks Meter: 20	...I don't have a working lcd board...

10-06-2008, 23:23	#11 (permalink)
patrik.b Freak Poster Join Date: Jun 2005 Posts: 314 Member: 153675 Status: Offline Thanks Meter: 20	With the picture posted by vinay_sharma i fix my problem. Here the solution: http://forum.gsmhosting.com/vbb/show...&postcount=479 Many thanks to vinay_sharma

12-27-2008, 14:51	#12 (permalink)
babak fatolahi Junior Member Join Date: Apr 2007 Location: iran Age: 38 Posts: 6 Member: 488828 Status: Offline Sonork: babak_fatolahi Thanks Meter: 0	patrik .b i have same prob can you explaine that pic (vinary_sharma) the up kepad ligth work but LCD light is not work ?